Composite jackets (RUUKKI, KOVPROF, HOESCH, ROVA) steel systems mounted between themselves and on the building skeleton by interrupting thermal bridges through a sealing microprojection system. The cassettes are filled with thermal insulation – mineral wool. Thicknesses – cassette dimensions 100-2200 mm for the required thermal resistance and static options. In the opposite direction, a trapezoid or sinusoidal lamoplastic sheet is deposited as an outer façade. The corners and ends are lined with lakoplastove fittings.